The roots of plants are important to photosynthesis because they ...

1. remove oxygen from the plant.

2. provide the water needed.

3. remove glucose from the plant.

4. provide the carbon dioxide needed.

Which of the following pairs are the best examples of homologous structures? A) bat wing and human hand B) owl wing and hornet wing C) porcupine quill and cactus spine D) bat forelimb and bird wing E) Australian mole and North American mole

What are two types of anaerobic respiration?

How does the nurse differentiate a pleural friction rub from a pericardial friction rub?

Which of the structures is surrounded by the connective tissue sheath known as the perimysium?

Why can scientists not always divide a period into epochs

Which of the following lists fits the order of these three descriptions: Age of Mammals, Age of Dinosaurs, and longest geologic time period. Choose one: A. Mesozoic, Cenozoic, Paleozoic B. Cenozoic, Mesozoic, Precambrian C.

The hypothalamus gland is important in many feedback loops. Which of the following systems does the hypothalamus work in? Check all that apply. A. endocrine B. nervous C. integumentary D. circulatory

Which scientist is matched with his contribution to evolutionary theory? Jean-Baptiste Lamarck-population growth Charles Darwin-inheritance of acquired traits Thomas Malthus-relationship of all living things Erasmus Darwin-competition and sexual

What is the minimum mean body mass required for metamorphosis if a tadpole to occur

Identify the advantages and disadvantages of using coal for energy. Name at least TWO alternative sources of energy